FM Antenna 28db Signal Pre amplifier Booster This FM antenna amplifier will boost FM signals at the antenna before there is any signal loss or noise introduced by your cable system allowing you to get all your signals to your radio The signal is amplified at the antenna which allows all the received signal to be presented to your receiver. It helps to up signals from mono to stereo or if signals are jumping between mono and stereo or stereo and HD it will help hold it on the stereo or HD signal. Comes with everything you need to amplify your FM signals. The is amplifier is for reception and will work with all our indoor and outdoor reception antennas